Bump safer-golangci-lint.yml to 1.43.0

[fxamacker]

Closes #235. Updates #230 but this is useful on its own.

Description

Update safer.golangci-lint.yml (GitHub Actions workflow used for running lint checkers).

Changes in the yml:

• bump Go to 1.17.x
• bump golangci-lint to 1.43.0

The bump in golangci-lint updates various lint checkers that it wraps to get bugfixes. This new version is working fine on my open source projects.

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• [x] Targeted PR against main branch
• [x] Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• [x] Code follows the standards mentioned here
• [x] Updated relevant documentation
• [x] Re-reviewed Files changed in the Github PR explorer
• [x] Added appropriate labels

[codecov-commenter]

Codecov Report

Merging #234 (926208b) into main (d9e6627) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #234   +/-   ##
=======================================
  Coverage   68.60%   68.60%           
=======================================
  Files          14       14           
  Lines        7129     7129           
=======================================
  Hits         4891     4891           
  Misses       1611     1611           
  Partials      627      627           

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